MAX16821BEVKIT+ Maxim Integrated Products, MAX16821BEVKIT+ Datasheet - Page 2

• Manufacturer Part Number: MAX16821BEVKIT+
• Description: KIT EVAL FOR MAX16821B
• Manufacturer: Maxim Integrated Products

Specifications of MAX16821BEVKIT+

• Current - Output / Channel: 660mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 28V
• Features: Dimmable
• Voltage - Input: 7 ~ 24V
• Utilized Ic / Part: MAX16821
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Before beginning, the following equipment is needed:
• 7V to 24V, 4A DC power supply
• One series-connected LED string rated at 660mA
• One current probe to measure LED current
• One voltmeter
The MAX16821B EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Connect the positive terminal of the power supply to
2) Connect the anode end of the LED string to the
3) Connect the cathode end of the LED string to the
MAX16821B Evaluation Kit
Note: Indicate that you are using the MAX16821B when contacting these component suppliers.
2
DESIGNATION
(28V maximum LED voltage)
Central Semiconductor Corp.
Diodes Inc.
IRC Inc.
Murata Mfg. Co., Ltd.
Sumida Corp.
Taiyo Yuden
Vishay
the VIN pad on the EV kit. Connect the negative ter-
minal of the power supply to the PGND pad next to
the VIN pad.
LED+ pad.
LED- pad.
_______________________________________________________________________________________
R11
R12
R7
R8
R9
SUPPLIER
QTY
1
1
1
1
1
Recommended Equipment
0.15 Ω ±1%, 0.5W sense resistor
(1206)
IRC LRC-LRC1206LF-01-R150-F
1 Ω ±5% resistor (0603)
2k Ω ±1% resistor (0603)
2.49k Ω ±1% resistor (0603)
1.24k Ω ±1% resistor (0603)
DESCRIPTION
Quick Start
Procedure
631-435-1110
805-446-4800
361-992-7900
770-436-1300
847-545-6700
800-348-2496
203-268-6261
PHONE
4) Clip the current probe across the string wires to
5) Turn on the power supply and increase the voltage
6) Verify that the LED string DC current is approxi-
7) Measure the voltage between the LED+ to LED-
The MAX16821B EV kit circuit is designed to evaluate
the MAX16821B PWM LED driver controller. The EV kit
is configured in a boost topology and provides 660mA
LED current for a string of user-supplied external high-
brightness LEDs (HBLEDs) rated up to 28V. The
MAX16821B EV kit operates from a DC supply voltage
of 7V to 28V.
The EV kit average input current is set to 3.75A using
resistor R6. The LED current is set to 660mA using resis-
tor R7. A PWMDIM PCB pad is provided for PWM dim-
ming operation of the external LEDs. A CLKOUT PCB
pad is also available to drive a second LED current regu-
lator 180° out-of-phase with the first EV kit.
* EP = Exposed pad.
DESIGNATION
measure the LED current.
to 7V or above.
mately 660mA.
PCB pads.
R13
U1
—
Component List (continued)
QTY
1
1
1
www.centralsemi.com
www.diodes.com
www.irctt.com
www.murata.com
www.sumida.com
www.t-yuden.com
www.vishay.com
Component Suppliers
Detailed Description
1k Ω ±1% resistor (0603)
Maxim PWM LED driver controller
MAX16821BATI+ (28-pin thin
QFN-EP*, 5mm x 5mm x 0.8mm)
PCB: MAX16821B Evaluation Kit+
WEBSITE
DESCRIPTION